Spinning process for producing high strength, high modulus, low

Details Spinning process for producing high strength, high modulus, low Spinning process for producing high strength, high modulus, low

1991-07-01

1993-02-16

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

26421117, B29C 4788

Patent

active

051868792

ABSTRACT:
A process for spinning an organic synthetic melt spinnable polymer includes the steps of: extruding the polymer through a spinneret; passing the filaments from the spinneret through an elongated zone; maintaining the filaments at a temperature above the glass transition temperature of the polymer within the zone; and thereafter converging the filaments. Alternatively, the process includes the steps of: extruding the polymer through a spinneret; providing an elongated zone having a length of at least 5 meters or means for controlling the temperature within said zone from a predetermined maximum to a predetermined minimum; passing the filaments through the zone; and thereafter converging the filaments.

REFERENCES:
patent: 2918347 (1959-12-01), Notarbartolo et al.
patent: 3361859 (1968-01-01), Cenzato
patent: 3447202 (1969-06-01), Kato
patent: 4456575 (1984-06-01), Smith et al.
patent: 4909976 (1990-09-01), Cuculo et al.
PN-J55022012 Feb. 16, 1980 Abstract.
PN-JP54038213 Nov. 20, 1979 Abstract.
58-54020 (A) Mar. 30, 1983 Abstract.
91304190.1 Abstract, Nov. 1991.

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